August otto



A. OTTO, Jn.

TANK HEATER.

APPLlcAnoN mso Amm. ma.

l",`309,'1 01. Patented July 8, 1919.

@y ma, f

'UNITED srn'rus 'PATENT OFFICE.

AUGUST Aparra-Jn., or SANDWICH, ILLINOIS.-

Toall 'whomit concern v A Be it known thatfI,l A Ueusr Orro,`,] r.x, a citizenk of the .United States, and residentfof Sandwich, county of Dekalb', State of Illinois, have invented certain new Y.and .useful Improvements in Tank-Heaters, of which the following is a specification and which are illustrated in the accompanyingdrawings, forming a p art thereof. l e

The invention relates to a tank and water heater and more particularly to Vheaters "of the type adapted to stand in the watery to be heated and has for its object to simplify the construction `and improve the operation of heaters of this type, especially in making adequate provision for cleaning the tire. flo this end the invention `contemplates aconstruction in which the 'fire pot is ,secured to the lid of the heater and may bereadily lifted out of the casing for cleaning 'and other purposes. Other'featuresof the linvention will be described in connection .with the construction shown in the accompanying drawings, in which Y Figure 1 is a vertical sectional perspective view of a heater embodying the features of the present invention;

Fig. 2 is a perspective view showing the lid of the heater and the parts permanently connected thereto;

Fig. 3 is a perspective View of the ash pan7 and Fig. 4: is a horizontal section on the plane indicated by the line 4 i on Fig. l.

In the form of construction shown in the drawings the heater comprises a casing, as 10, of sulicient height to extend above the level of the water in the tank (not shown) to be heated when resting upon the bottom of the said tank. The casing 10 is normally closed at the top by a removable lid 1l which rests upon the top of the casing and is preferably formed upon its under side with a continuous bead 12 to fit within the upper edge of the casing and prevent lateral displacement of the lid.

In order to simplify the construction and operation of the heater all of the parts of the latter with the exception of the casing and an ash pan `13 may, to advantage, be attached to the lid. It therefore follows that when the lid is lifted by suitable means, as by a bail lei, these parts are al1 withdrawn from the casing. The ash panmay similarly be provided with a bail 15 to facilitate its removal.

:Slots are. .cntrol'led "by a` .Sliding lp'latel25, adulstablebvmcauscfa'1111010 26'.'

Thea@ por may Coussin. @imperante Patenten July is; 191.9. y App1mauna1dapri1i1,191sfsr'aluo-zztva ,Sheet metal body .lxt'zthe "lower end 0f which is secured attire `grate'f1.7.asjbyfmeans ,of brackets 18 rivetedfto'the'body 16 kand to the rim .of the grate..r Prefe'rably the `grate y17 is of lsmaller size than the body 16.'whereby'l a space 19 is left 'around the grate through which a` poker .may be passed in olea/ning the y.fire-pot', .removing -adhering elinkers and the 'like'. The' 'body l, vof 'the fire-pot' may be "convenientlyV attached fito the' lid llby'means .of afdownwardly'ex;

.tending flange '20 formed integrallywith the lid and entering the body'olf :the ,irefpot Air is preferably "admitted to the 'space below the 'gratel through awverticailjiir'ipassage 35. formed by the use; of la Vplate v2,1 having lateral lua-hess 2.2 Secured l.t0 thcinuer face As shown, Wthisl air passage is" 'its upper fend toy ajauge 2.3 Q.1`1; the1undei" side' of the lid. When the passage 'is so i .maday fur inlet Slots `24. .are .formed in .the

lid 1 1 inline with the passage ,and [these Inner The products of'combustion are'discharged V*211.1ffaifs1 a smelt@ ...Stack 27 `Whitt.v lits-ever .ananpular upstandin'g flange 2801i the lid 11 surrounding an aperture 29in the. latter. A damper 30 may be provided in the smoke stack for contro-lling the rate of combustion in the fire-pot. Fuel may be introduced through an opening in the lid normally closed by a cover 31 hinged to the llid at 32- and provided with a suitable'handle, as 33.

As in some cases it may be desirable to admit air at the ytop of the {ire-pot to avoid air being drawn through the latter as when it is desired to totally cheek the fire, a damper 34 of well known type may be arranged in the cover 31.l It will be seen that under normal conditions of operation, air passes through the apertures 24 in the lid down the passage 35 to the space below the grate, then up through the grate and the bed of fuel thereabove land inally the products of combustion escape through the smoke stack 27. The air between the body v16 `of the fire-pot and the casing 10l is not disturbed and so forms a dead air space which prevents undue cooling of the fire-pot and its contents. On the other hand, the body 16 of the {ire-pot is preferably made of the same shape and. only enough smaller than the casing 10 to permit of its being readily removed and replaced and the intervening air space is therefore relatively narrow.

The arrangement shown has the further advantage that the movement of the air from the time of its first contact with the fuel to its discharge as products of combustion into the atmosphere is always upward so that conditions are favorable for producing a draft through the heater which maT be controlled as desired, by means of the dampers provided for the purpose.

Vhen the ire is to be cleaned, the bail 14: is used for lifting thev entire re-pot from the casing 10 and resting it upon the ground. Upon raising the hinged cover 31, a poker `may be introducedv and the re thoroughly cleaned even though a deep bed of coals may be contained in theyire pot. Under these circumstancesthere is no occasion/to remove any oftheiire or unburned coals from the fire-pot and the ash pan l3 v is only required to receive so much of the ash as falls through the grate during the normal operation of the heater.

' I claim as my invention Y l. A tank heater comprising, in combination, an upright outer casing having an open top and imperforate sides, aI removable lid covering the entire top of the casing7 said lid having air inlet and smoke flue openings, a relatively deep fire-pot having imperforate sides and a foraminous bottom and being spaced apart from the side and bottom Walls of the casing so as to provide Copies of this patent may be obtained for a dead air space between the firepot and the side Walls of the casing, the smoke flue opening of the lid registering With the chamber of the fire-pot and the air inlet. opening of the lid being located Without the lire-pot, and a. smoke stack carried by the lid. Y

2. In a Water tank hea-ter, in combination,

an upright casing adapted to project abovel the Water in the tank and being without perforations in the portion adapted to be sub'- merged, a. cover for the casing, a tire-pot depending from the cover, such pot being an upright casing havir'igl a'cover, a fire-pot Within the easing and having a grated bottom located abovethe bottom of the casing, the walls of the fire-pot being spaced apart from the casing and forming therewith an air chamber open at .the bottom and other- Wise closed, an air induction passage loading to the lower portion of the casing and discharging below the grate, and a smoke flue leading from the fire-pot.

AUGUST OTTO, JR.

ve cents each, by addressing the Commissioner of Patents Washington, D. C. 

